8978466974749 has 2 divisors, whose sum is σ = 8978466974750. Its totient is φ = 8978466974748.

The previous prime is 8978466974707. The next prime is 8978466974759. The reversal of 8978466974749 is 9474796648798.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8973511518724 + 4955456025 = 2995582^2 + 70395^2 .

It is a cyclic number.

It is not a de Polignac number, because 8978466974749 - 2¹⁵ = 8978466941981 is a prime.

It is a super-2 number, since 2×8978466974749² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8978466974749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8978466974759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4489233487374 + 4489233487375.

It is an arithmetic number, because the mean of its divisors is an integer number (4489233487375).

Almost surely, 2^{8978466974749} is an apocalyptic number.

It is an amenable number.

8978466974749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8978466974749 is an equidigital number, since it uses as much as digits as its factorization.

8978466974749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36870930432, while the sum is 88.

The spelling of 8978466974749 in words is "eight trillion, nine hundred seventy-eight billion, four hundred sixty-six million, nine hundred seventy-four thousand, seven hundred forty-nine".